Looking to buy a co-op (220K) in brooklyn ny (Flip tax fee 25%) Is it worth it? good investment?

1. my in-laws will live there, its a 100% coop you cant rent it out.
2. They are planning on living there at least 5-10 yrs. (maybe even 10+)

In NYC and the five Boroughs as you know co-ops are very common. I've seen flip tax and honestly I'm not a big fan of it but usually the maintenance is cheaper and may include some utilities. My advice is to try and find one without a flip tax and if it has one make sure it is small. 25% of the profit is a nice piece of the profit when you sell.

Generally when looking for Real Estate people tend to avoid coop properties for all the purposes you just listed and with US property values litterally digging holes for most this would be a most unwise descision but its very hard to plot out how well the market will be in 5 years let alone 10 or more. A lot more factors are involved in this including the specific area, distance to schools and other municipal property, property size, and of coarse permamnent fixtures, here in Michigan which obviously has a slightly lower cost of living real estate can easily reach this price even for very small properties but its the area and the fixed improvements that make the real difference. If the property was rentable then with proper investing this would be a wise descision but only in the long term.